#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 1;
const int M = 1e9+7;


int main()
{
#ifdef LOCAL
    freopen("in.txt", "r", stdin);
    freopen("out.txt", "w", stdout);
#endif
    ios::sync_with_stdio(false), cin.tie(0);
    int n;
    cin >> n;
    int ans;
    if (n <= 125) ans = 4;
    else if (n <= 211) ans = 6;
    else ans = 8;
    cout << ans << endl;
    return 0;
}